I know that importing South African ranch/farm workers is a thing in SD. I’ve met several up there. My friends say they are very hard workers and tough. The program is very controlled, an individual can only stay for a certain amount of time and then has to go back to SA for a specified period of time.
Lots of government paperwork and tracking involved.
They can’t get Yankee Doodles that will do the work, so it’s a pretty important program for them.